Doffer.



B. A. PETERSON.

DOPFBR.

APPLICATION FILED JAN.6.1912. 1 ,1 17,437, vPatented Nov. 17, 1914,A

2 SHEBTS-SHEET l.

Y /ZWGAW @@gi B. A. PETERSON.

DOYFER.

APPLIGATION FILED JAN.6,1912.

Patented Nov. 17, 1914.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

BUBT A. PETERSON, OF ROCKFORD, ILLINOIS, ASSIGNQB. T0 HOWARD D. COLMAN, LUTHER L. MILLER, AND HAR-RY A. SEVERSON, COPAR'INERS DOING BUSINESS AS BARBERfCOLMAN COMPANY, 0F ROCKFORD, ILLINOIS.

DOFFER.

To all 'whom it may concern Be it known that I, BUR'r A. PETERsoNa citizen of the United States, residing at Rockford in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Doffers, of which the following is a specification.

This invention refers to portable machines for dofiing ring spinning frames.

When a spinning frame is stopped, preparatory to doiiing, the travelers cdme to rest at various points upon the spinning rings, with the yarn extending up from each traveler, along the bobbin, to the thread guide or pig-tail directly above the bobbin. The thread guides are then swung up and back so as to be out of the way during the doing operation. If the yarn extends up or across the forward side of the bobbin, the yarn may not be able to slip oil' the bobbin soas to extend directly from the traveler to the thread-guide when the latter is thrown back, but on the contrary the yarn may extend from the traveler upor across the bobbin, and then to the thread-guide.'

When the dofng device ismoved downward over a bobbin whose thread is arranged as last described, the doing device will push the thread down to the lower part of the bobbin. Upon the upward movement of the doing device and the bobbin, a few wraps of the yarn will slip oi the bobbin onto the spindle as shown in Figure 14 of the drawings of Patent No. 983,858, issued February 7, 1911, upon an application filed by How-- ard D. Colman and myself. In this position, the yarn extends from the drawing rolls, across the spindle, to the traveler, and thence to the spindle` When the empty bobbin is dropped onto the spindle the lower end of said bobbin will press against both strands (the strand running from the drawing rolls to the traveler, and the strand running from the traveler to the spindle) and ,break the thread at the traveler.

The object of this invention is to provide means for dislod ing any threads that fouled on the bo bins when the threadguides were thrown back, in order to prevent breakage of the threads in the operation of placing empty bobbins on the spindles.

In the accompanying drawings, Fig. 1 is a fragmental elevation of the leading or ad- Speciflcation of Letters Patent.

Application led January 6, 1912.

Patented Nov. 17, 1914.

Serial No. 669,764. p

vancing side of a doer embodying my inv ention. Fig. v2 is a fragmental rear elevation. Figs. 3, 4 and 5 are fragmental top plan views in a series, showing successive steps in the operation of placing a thread in safe position for bobbin-donning.

In the drawings, a denotes a bobbin which has just lbeen lifted from a vspindle (not shown), and b c d e .designate bobbins on the spinning frame. The ring rail is shown at f, g being spinning rings on said rail, and h being travelers slidably mounted on the rings in the usual way.

While the dofer may beof anypreferred construction, I have herein illustrated the invention as applied to a dofl'er of the type disclosed in said Patent No. 983,858. Using the same reference numbers as are applied to corresponding parts in said patent, 39 -is the ,mainl shaft mounted in the doier framework; 40 is the actuatin crank fixed to the forward end of said shafzt; 41 is a cam disk fixed to the rear end of the shaft; 25 is a slide frame mounted on guides 31 and arranged to be horizontally reciprocated by the cam disk 41; 36 is a slide plate mounted between vertical grooved guides 37 (Fig. 3) 22 is a doiiing device fixed on the slide'plate 36; 23 is a donning device fixedon the slide Iframe 25; and 38 is a channel bar fixed to the slide plate 36 and engaged by a roller stud 44 on the cam disk 41, said cam disk imparting to the doing device 22 a downward movement over a full bobbin, then a rising movement to lift the bobbin, then a horizontal movement to position the dofiing device over the next bobbin, and then a downward movement upon the last mentioned bobbin, such downward movement carrying the previously-lifted bobbin against a stop 102 whereby said bobbin is detained as the doing device descends and thus discharged from said device. The cam disk also imparts to the donning device 23 reciprocating movement in a horizontal direction in the vertical plane of the spindles.

In Fig. 1 the dofing machine is to be understood as traveling toward the observer, and in Fig. 2 as moving to the left.

The threads leading from the threadguides to bobbins b, c and e are in proper position for dofling and donning, said threads extendin upwardly and rearwardly from the trave ers to the N thread-guides.

The traveler for bobbin d is shown as at one side of the bobbin, and the thread as extending to the other side of the bobbin and thence to the thread-guide. Y

The means for moving out of the way of the empty -bobbins any threads that might otherwise be contacted and broken by said bobbins consists, in the illustrative embodiment herein shown, of an arm 104-pivoted at 105 to the horizontally V moving slide frame 25. On the upper end ofthe arm 104 is a horizontal member 10G having oppositely vinclined surfaces 107; 108 thereon. The thread-moving arm 104 operates ongg; bobbin in advance of the bobbin beingg., do'ed; in this embodiment, upon the second bobbin ahead of the bobbimbeing dofed. AS the dolling device descends upon a bobbin, the channel bar 38 l(which is attached to the slide plate 36 that carries thevdofing device) contacts the arm 104 and causes it to swing rearwardly,.as indicated in dotted lines in F ig.l 1. When the channel barvrises, a spring 109 restores the arm 104 to its normal position, such position. beingy determined .by contact ofthe arm with astop shoulder 4110 .on the slide -frame 25.

Referrin to 1.` and3-which-il1us trate. the obbin d.' When -the-.-arm-104 swings rearwardly, the .surface JlOSf contacts the .thread at a.pointrabove. the bobbin,l and cams or..-pushes saidthread aside. After the. surface 108 lhas passed the thread, 4the latter springs `back so as .to lie infront of thesurface 107, as lrepresented in Fig.` 4. Uponthe return movementof the arm, the surface 107 moves the thread forward until the latter is clear of the bobbin whereu on the thread. slides ofvsaid inclined sur ace 107 to the side of the bobbin at which the traveler is standing, and drops into the vertical lane of the-traveler and thread-guide. In tliis position, the tl1read-will not be broken when .the empty bobbin is placed upon vthe spindle. vIt will be -seen that'the arm 104, operating as it does in advance of the donnin'g device, insures that-al1 of the threads shall be in proper position for-the donning operation. f-

y,As hereinbefore stated, when the spinning frame is prepared for dofi'ng, the travelers and threads standin various positions. Fig. 3 illustrates one of the most troublesome positions. In some instances the thread may stand in such position that the surface 108 will press the thread rearwardly and cause the traveler-to-swing around toward the rear, sothat the thread will be in safe position for donning.

I claim as my invention:

1. In a. doi'er, a dofer framework, and a member at the rear side of the framework and movable toward and away from said framework, said member being inclined to push a thread forward v'and sidewise.

2. In a portable dofl'er for ring spinning frames wherein :rt-bread extending from the' drawing rolls to a Atraveler may become fouled on a bobbin, a framework adapted to travel alug the front of the spinning frame, a donning device carried bythe framework, an arm attached to -the'framework for'lifting a fouled thread c oil'I the bobbin,` and means for operating-said arml in advance of the oprationof the donning devicer f f 3. In a dofler, a doiier framework, af bobbin-donning device carried by the frame` work, and means for engaging a'thread and moving' it toward the doffer framework,.said means permitting the thread toescape when clearof the bobbin. f 1 4. In a doffer, a doier framework, anfup wardly extending arm pivoted at itsflower end upon the rear side -of the framework, a member on the upper end-of said arm hav'- ing two oppositely inclined surfaces leach adapted to deflect aV fouled thread; :and means fo-r swinging said arm.\ x 5. In a dofer, a doffer framework, a' horrzontally-.reciprocable slide frame in said framework, a vertically re'ciprocableslideon said slide frame,a`donning device lon. said slide frame, an arm pivoted at its lower portion on said-slide frame, means to swing-'the arm rearwardly as the slide descends, means to restore the arm as'the `slide ascends, and a member carried by the upper portion of said arm,l said member having two oppositely inclined edges -adapted to 'deflect a fouled thread. I l In testimony whereof I aiiix my signature in the presence of two'l'witnesses.

.- BURT A. PETERSON.

VVitneSSeS: W. K. HEYM, 1' vLOUISE CULvER. 

